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UNIVERSALLY MOUNTABLE, ENVlRONMENTALLY PROTECTED, MOBILE ANTENNA INSTALLATION KIT

IP.com Disclosure Number: IPCOM000006328D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-25
Document File: 2 page(s) / 115K

Publishing Venue

Motorola

Related People

Thomas A. Goodwin: AUTHOR [+2]

Abstract

Standard Mobile Antenna installations require a three quarter of an inch hole drilled in the roof of a vehicle to per- manently mount a two-way radio antenna. Many of these vehicles have elaborate, customized interiors that must be removed to route the cables. In doing so, a great deal oftime is spent and the potential to damage the integrated uphol- stery is great. Additionally, a large subset of this market lease their trucks and are contractually forbidden from drilling any holes through to the interior of the vehicle.

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MOTOROLA INC. Technical Developments Volume 14 December 1991

UNIVERSALLY MOUNTABLE, ENVlRONMENTALLY PROTECTED, MOBILE ANTENNA INSTALLATION KIT

by Thomas A. Goodwin and Robert L. Sorensen

  Standard Mobile Antenna installations require a three quarter of an inch hole drilled in the roof of a vehicle to per- manently mount a two-way radio antenna. Many of these vehicles have elaborate, customized interiors that must be removed to route the cables. In doing so, a great deal oftime is spent and the potential to damage the integrated uphol- stery is great. Additionally, a large subset of this market lease their trucks and are contractually forbidden from drilling any holes through to the interior of the vehicle.

  Other options available include the exterior mount- ing of the antenna through the use of various "L" shaped brackets used to attach the antenna to side mirrors. In the Trucking market, the side mirror generally possesses a Citizen Band antenna and another antenna will not tit. If it did, it could potentially interfere with the operation of the individual radios.

  Finally, a new Motorola vehicle location system fea- turing a Loran-C receiver and an antenna has the same problems mentioned above, but is far more sensitive to the effects of the environment. It uses a pre-amp that requires a constant DC voltage. This DC voltage cre- ates a mechanism for Galvanic corrosion and if exposed to the outside environment, the function of this device would be impaired or rendered completely nonopera- tional. As a result, this system can only be used with the, antenna installed through the roof of the vehicle to achieve the required environmental protection.

  All of these problems can be solved by using a mounting bracket that is flexible enough to be mounted on any surface regardless of its inclination and an environmentally sealed cable. This device provides the user with an antenna installation kit that can be mounted to a secondary structure, such as any of the aerody- namic body panels that are common on many of today's heavy duty trucks, in a timely fashion while providing environmental protection for sensitive electrical circuits such as the Loran-C Receiver.

This Installation Kit consists of four main sub- assemblies: Top Bracket, Bottom Bracket, Support Plate

104

and an overmolded cable and contact assembly. The brackets are formed from Stainless Steel and the cable assembly is the standard Teflon"' cable kit with an overmolded base that provides the environmental pro- tection. (See Figure 1)

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Fbure 1

  The bottom support attaches to any fixed structure and then the top bracket is rotated until the antenna is in its proper orientation. By attaching it to a secondary surface, the issues of disassembling the vehicle's interior and drillin...